The present invention relates to a liquid barrier assembly (1) comprising at least two barriers (2,3) each comprising a substantially rigid container and a front wall (5) against which liquid is intended to be incident. Adjacent barriers (2,3) are linked by a connector (12) which comprises a first relatively rigid portion (13) and a second relatively deformable portion (15). The portions (13, 15) are received in respective recesses defined in neighbouring side walls of adjacent barriers (2,3). The second portion (15) is deformed upon juxtaposition of adjacent barriers (2,3) in a predetermined manner so as to form an effective water-tight seal between the barriers (2,3).